The reasons for the insufficient heat of the heat exchanger are as follows:

1. The air is not exhausted. The heat exchanger body is not designed with a high-point air release valve on the tube side and shell side, which will affect the heat exchange effect. In the initial stage of operation, the system will discharge steam from time to time when the system is filled with water and during operation to minimize the influence of air in the system on heat exchange.

2, there is scaling phenomenon. Fouling will have a great impact on the heat exchange of the heat exchanger, resulting in a decrease in the heat transfer coefficient and a greatly reduced heat exchange efficiency.

3. The amount of steam is insufficient. In the heat exchanger system, the steam metering device uses a vortex flowmeter. Due to the limited installation conditions, it cannot meet the installation requirements of the steam metering device, and accurate data cannot be obtained for the amount of steam entering the equipment.

4. The waterway is blocked. Waterway blockage will reduce the amount of circulating water flowing through the equipment, resulting in a large temperature difference between the outlet and inlet water of the heat exchanger, a large pressure difference, and a high drain temperature.

5. Poor drainage. The condensate drainage is not smooth during the operation of the heat exchanger. The water level in the equipment often reaches a high limit. A bypass must be opened for drainage. Otherwise, the water level will rise and the vapor pressure on the steam side will increase, causing the steam side of the heat exchanger heater The safety valve takes off.